Update Dockerfile

Dockerfile

@@ -10,7 +10,7 @@ COPY requirements.txt .
 RUN pip install --upgrade pip && pip install --no-cache-dir -r requirements.txt
 
 # Set Hugging Face cache for all model downloads (best practice for Spaces)
-ENV TRANSFORMERS_CACHE="/workspace/.cache/huggingface"
+ENV HF_HOME="/workspace/.cache/huggingface"
 RUN mkdir -p /workspace/.cache/huggingface
 
 # Pre-download Stable Diffusion v1-5 weights into cache